Echo SRM - 3100, SRM - 3110, SRM - 3400, SRM - 3100S Operator's Manual
Grass T rimmer/Brush Cutter
Operator's Manual
MODELS, SRM - 3100, 3110 Type 2/2E
SRM - 3100S Type 1/1E
Serial Number 001001 & Up
SRM - 3400 Type 1/1E
Serial Number 001001 - 541792
W ARNING
X7502124702
The engine exhaust from this
product contains chemicals known
to the State of California to cause
cancer, birth defects or other
reproductive harm.
WARNING DANGER
Read rules for safe operation and instructions carefully. ECHO provides an Operator's
Manual and a Safety Manual. Both must be read and understood for proper and safe
operation.
89861155832
03/00
2
INTRODUCTION
Welcome to the ECHO family. This ECHO product was designed and manufactured to provide long life and on-the-jobdependability. Read and understand this manual and the SAFETY MANUAL you found in the same package. You will
find both easy to use and full of helpful operating tips and SAFETY messages.
W ARNING DANGER
Read rules for safe operation and instructions carefully. ECHO provides an Operator's Manual and a Safety
Manual. Both must be read and understood for proper and safe operation.
THE OPERATOR'S MANUAL –
contains specifications and information for operation, starting,
stopping, maintenance, storage and assembly specific to this product.
THE SAFETY MANUAL –
explains possible hazards involved with the use of Grass Trimmers and
Brush Cutters and what measures you should take to make their use
safer.
TABLE OF CONTENTS
Introduction ........................................................................ 2
- The Operator's Manual ........................................... 2
- The Safety manual...................................................2
Manual Safety Symbols and Important Information ......... 3
Safety.................................................................................. 3
- Decals ...................................................................... 3
- International Symbols ............................................. 4
- Equipment ............................................................... 5
- Fuel.......................................................................... 5
- Personal Condition and Safety Equipment ............. 6
- Safe Operation......................................................... 7
- Extended Operation/Extreme Conditions ................ 8
Description ......................................................................... 9
- Contents .................................................................. 9
- Blade Terms and Definitions................................... 9
- Emission Control................................................... 10
Specifications.................................................................... 12
Assembly.......................................................................... 13
- Drive Shaft /Powerhead......................................... 13
- Plastic Shield Installation ...................................... 13
- Nylon Head Installation ........................................ 14
- Blade Installation................................................... 14
- Harness Clamp Installation ................................... 15
- Throttle Linkage and Ignition Leads...................... 16
- Front Handle Installation ...................................... 17
- U-Handle Installation ............................................ 17
Pre-Operation ................................................................... 20
- Operation with Blades .......................................... 20
- Fuel........................................................................ 22
- Equipment Check .................................................. 23
- Determine Operation Area .................................... 24
CopyRight© 1999 By Echo, Incorporated
All Rights Reserved.
Operation.......................................................................... 24
- Starting Cold Engine .............................................. 25
- Starting Warm Engine ............................................ 26
- Stopping Engine .................................................... 26
Maintenance ..................................................................... 27
- Skill Levels ............................................................ 27
- Maintenance Intervals ........................................... 27
- Air Filter................................................................ 28
- Fuel Filter .............................................................. 28
- Spark Plug ............................................................. 29
- Cooling System Cleaning....................................... 29
- Exhaust System ..................................................... 30
- Carburetor Adjustment Emission.......................... 31
- Carburetor Adjustment Non Emission.................. 32
- Lubrication ............................................................ 34
- Nylon Line Replacement....................................... 34
- Sharpening Metal Blades....................................... 37
Troubleshooting................................................................ 38
Storage .............................................................................. 39
Servicing Information........................................................ 40
- Parts ...................................................................... 40
- Service .................................................................. 40
- ECHO Consumer Product Support ...................... 40
- Warranty Card....................................................... 40
- Additional or Replacement Manuals..................... 40
- Manual Ordering Instructions ............................... 40
Specifications, descriptions and illustrative material in this
literature are as accurate as known at the time of publication, but are subject to change without notice. Illustrations
may include optional equipment and accessories, and may
not include all standard equipment.
GRASS TRIMMER/BRUSH CUTTER
OPERATOR'S MANUAL
MANUAL SAFETY SYMBOLS AND IMPORTANT INFORMATION
Throughout this manual and on the product itself, you will find
safety alerts and helpful, information messages preceded by
symbols or key words. The following is an explanation of those
symbols and key words and what they mean to you.
This symbol accompanied by the words WARNING and
DANGER calls attention to an act or condition that can lead to
serious personal injury to operator and bystanders.
The circle with the slash symbol means whatever is shown
within the circle is prohibited.
IMPORTANT The enclosed message
provides information necessary for the
protection of the unit.
NOTE This enclosed message provides tips for
use, care and maintenance of the unit.
3
SAFETY
DECALS
Locate these safety decals on your unit. The complete unit illustration,
found in the "DESCRIPTION" section, will help you locate them. Make
sure the decals are legible and that you understand and follow the
instructions on them. If a decal cannot be read, a new one can be
ordered from your ECHO dealer. See PARTS ORDERING instructions
for specific information.
DEBRIS SHIELD DECAL
Metal Debris
Shield
4
4
Shaft Decal
W ARNING DANGER
• This unit can be dangerous and cause serious injury if improperly
used. To reduce injury risk to operator, helpers and bystanders,
read and understand the Operator's and Safety manuals.
• Blindness can occur from objects that are thrown or ricocheted even
with shield in place. Operators, helpers and bystanders must wear
ANSI Z87.1 approved eye protection.
• Always wear hearing protection when operating unit.
• Prevent accidental contact with unit and any cutting attachment.
Maintain a 15M (50 ft.) radius, DANGER ZONE surrounding the
operator. ONLY the operator, dressed in proper protective clothing
should be in the DANGER ZONE.
• Beware of KICKOUT (blade thrust) when using blades. Special
precautions are necessary for blade operation, see your Operator's
and Safety Manuals. ONLY install ECHO approved blades on
Brush Cutters (SRM) models equipped with proper blade shield, Uhandles, harness, blade collar, nut and cotter pin.
• Blade/Cutting attachment does not stop immediately after releasing
throttle. Keep hands and feet clear of blade/cutting attachment
unless engine is shut off and cutting attachment is not moving.
• INSPECT BLADES BEFORE USE.
• DO NOT USE DAMAGED, CRACKED, BENT, DULL OR
IMPROPERLY SHARPENED BLADES.
• Do not remove shields, modify the unit or install attachments or
parts not approved by ECHO. Approved attachment information
and replacement Operator's and Safety Manuals are available from
your ECHO dealer or by writing: ECHO, INCORPORATED, 400
OAKWOOD RD., LAKE ZURICH, IL 60047.
INTERNA TIONAL SYMBOLS
Symbol form/shape
Symbol
description/application
"WARNING, SEE
OPERATOR'S
MANUAL
Wear eyes, ears and
head protection
Wear hand and
foot protection
Safety/Alert
Symbol form/shape
Keep bystanders and helpers
away 15 m (50 ft.).
Symbol
description/application
Hot
Surface
Finger Severing
DO NOT allow
flames or sparks
near fuel.
DO NOT smoke
near fuel.
Symbol form/shape
Symbol
description/application
Emergency stop
Carburetor adjustment
- High speed mixture
Carburetor adjustment
- Idle speed
Carburetor adjustment
- Low speed mixture
Symbol form/shape
Symbol
description/application
Fuel and oil mixture
Primer Bulb
Ignition
ON/OFF
Engine choke
control.
GRASS TRIMMER/BRUSH CUTTER
EQUIPMENT
Before operation a complete check of the unit must be performed;
• Check unit for loose/missing nuts, bolts and screws. Tighten and/or
replace as needed.
• Inspect fuel lines, tank and area around carburetor for fuel leaks. DO
NOT operate unit if leaks are found.
• Inspect shield for damage and ensure that the cut-off knife issecurely
in place. Replace if either is damaged or missing.
• Check that the cutting attachment is firmly attached and in safe
operating condition.
OPERATOR'S MANUAL
5
• Check that front loop handle and shoulder strap/ or shoulder/
waist harness are adjusted for safe, comfortable operation. See
Assembly Section for proper adjustment.
• Only use attachments and accessories specified by Echo for this unit.
FUEL
W ARNING DANGER
Fuel is VERY flammable. Use extreme care when mixing, storing or
handling or serious personal injury may result.
• Use an approved fuel container.
• DO NOT smoke near fuel.
• DO NOT allow flames or sparks near fuel.
• Fuel tanks/cans may be under pressure. Always loosen fuel caps
slowly allowing pressure to equalize.
• NEVER refuel a unit when the engine is HOT!
• NEVER refuel a unit with the engine running.
• DO NOT fill fuel tanks indoors. ALWAYS fill fuel tanks outdoors
over bare ground.
• Securely tighten fuel cap after refueling.
• Inspect for fuel leakage. If fuel leakage is found, do not start or
operate unit until leakage is repaired.
IMPORTANT
Spilled fuel is a leading cause of hydrocarbon emissions. Some
states may require the use of automatic fuel shut-off containers to
reduce fuel spillage. Contact your ECHO dealer for ordering
information.
6
After Refueling;
• Wipe any spilled fuel from the unit.
• Move at least 3 M (10 ft.) from refueling location before starting.
After Use;
• DO NOT store a unit with fuel in its tank. Leaks can occur. Return
unused fuel to an approved fuel storage container.
PERSONAL CONDITION & SAFETY EQUIPMENT
W ARNING DANGER
Trimmer/Brush Cutter users risk injury to themselves and others if the trimmer/brush cutter is used improperly
and or safety precautions are not followed. Proper clothing and safety gear must be worn when operating a
trimmer.
3M (10 FT.)
Physical Condition
Your judgment and physical dexterity may not be good:
• if you are tired or sick,
• if you are taking medication,
• if you have taken alcohol or drugs.
Operate unit only if you are physically and mentally well.
Eye Protection
Wear eye protection that meets ANSI Z87.1 or CE requirements
whenever you operate the trimmer.
Hand Protection
Wear no-slip, heavy duty work gloves to improve your grip on the
Trimmer/Brush Cutter handles. Gloves also reduce the transmission of
machine vibration to your hands.
Hearing Protection
ECHO recommends wearing hearing protection whenever unit is used.
GRASS TRIMMER/BRUSH CUTTER
Proper Clothing
Wear snug fitting, durable clothing;
• Pants should have long legs, shirts with long sleeves.
• DO NOT WEAR SHORTS,
• DO NOT WEAR TIES, SCARVES, JEWELRY.
Wear sturdy work shoes with non-skid soles;
• DO NOT WEAR OPEN TOED SHOES,
• DO NOT OPERATE UNIT BAREFOOTED.
Hot Humid Weather
Heavy protective clothing can increase operator fatigue which may lead
to heat stroke. Schedule heavy work for early morning or late afternoon
hours when temperatures are cooler.
OPERATOR'S MANUAL
7
SAFE OPERATION
Determine Operation Area
• Provide all operators of this equipment with the Operator's Manual
and insturctions for safe operation.
• Do not operate this product indoors or in inadequately ventilated
areas.
• Review the area to be trimmed. Look for hazards that could
contribute to unsafe conditions.
• Spectators and fellow workers must be warned, and children and
animals prevented from coming nearer than 15M (50 ft.) while the
trimmer is in use.
Operation
Use Proper Clothing & Equipment
• Before starting the unit, equip yourself and any other person working
within the 15M (50 ft.) Safety Zone with the required Protective
Equipment and clothing.
15M
(50 ft.)
Avoid Hot Surfaces
• During operation, the complete unit, especially the drive shaft
housing and the bearing housing may become very hot, too hot to
touch. Avoid contact during and immediately after operation.
8
Keep A Firm Grip
• Hold the front and rear handles with both hands with thumbs and
fingers firmly encircling the handles
Keep A Solid Stance
• Maintain footing and balance at all times. Do not stand on slippery,
uneven or unstable surfaces. Do not work in odd positions or on
ladders. Do not over reach.
EXTENDED OPERATION/EXTREME CONDITIONS
Vibration and Cold
It is believed that a condition called Raynaud’s Phenomenon, which
affects the fingers of certain individuals may be brought about by
exposure to vibration and cold. Exposure to vibration and cold may
cause tingling and burning sensations followed by loss of color and
numbness in the fingers. The following precautions are strongly
recommended because the minimum exposure which might trigger the
ailment is unknown.
• Keep your body warm, especially the head, neck, feet, ankles,
hands and wrists.
• Maintain good blood circulation by performing vigorous arm
exercises during frequent work breaks and also by not smoking.
• Limit the hours of operation. Try to fill each day with jobs where
operating the trimmer or other hand-held power equipment is not
required.
• If you experience discomfort, redness and swelling of the fingers
followed by whitening and loss of feeling, consult your physician
before further exposing yourself to cold and vibration.
Repetitive Stress Injuries
It is believed that overusing the muscles and tendons of the fingers,
hands, arms and shoulders may cause soreness, swelling, numbness,
weakness and extreme pain in those areas. Certain repetitive hand
activities may put you at a high risk for developing a Repetitive Stress
Injury (RSI). An extreme RSI condition is Carpal Tunnel Syndrome
(CTS), which could occur when your wrist swells and squeezes a vital
nerve that runs through the area. Some believe that prolonged exposure
to vibration may contribute to CTS. CTS can cause severe pain for
months or even years. To reduce the risk of RSI/CTS, do the following:
• Avoid using your wrist in a bent, extended or twisted position.
Instead try to maintain a straight wrist position. Also, when grasping,
use your whole hand, not just the thumb and index finger.
• Take periodic breaks to minimize repetition and rest your hands.
• Reduce the speed and force with which you do the repetitive
movement.
• Do exercises to strengthen the hand and arm muscles.
• Immediately stop using all power equipment and consult a doctor if
you feel tingling, numbness or pain in the fingers, hands, wrists or
arms. The sooner RSI/CTS is diagnosed, the more likely permanent
nerve and muscle damage can be prevented.
GRASS TRIMMER/BRUSH CUTTER
OPERATOR'S MANUAL
DESCRIPTION
The ECHO product you purchased has been factory pre-assembled for your convenience. Due to packaging restrictions,
shield installation and other assembly may be necessary.
After opening the carton, check for damage. Immediately notify your retailer or ECHO Dealer of damaged or missing
parts. Use the contents list to check for missing parts.
CONTENTS
Contents List
9
Items
1 - Power Head
1 - Drive Shaft Assembly
1 - Plastic Bag (co-pack)
- 1, Operator's Manual
- 1, Safety Manual
- 1, Warranty Registration Card
- 1, Limited Warranty Statement
- 1, Plastic shield
- 1, Tool Bag
--1, 8mm x 10mm wrench
--1, scrench
--1, locking tool
--1, L-Hex Wrench
- 1, Nylon Trimmer Head
- 1, Safety Glasses
- 1, 2-Stroke Oil Sample, 2.6 oz.
- 1, Shoulder Harness w/hip pad
- 1, Shoulder Harness w/o hip pad
- 1, Front Handle (L.H.) Assembly
- 1, Plastic Bag
--1, shield plate
--3, 5mm x 18mm screws (shield mtg.)
--1, metal shield
--1, bracket
- 1, Plastic Bag
-- 3, 5mm x 15mm screws (shield mount)
-- 2, 5mm x 8mm screws (bracket to shield)
-- 4, 5mm nuts
-- 4, 5mm lockwashers
MODELS
3100S/3400 3110 TYPE 2E
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
3100 TYPE 2E
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
BLADE
TERMS AND DEFINITIONS
Blade Capable
All Models include the "Blade Conversion Kit", therefore they are capable of using plastic/nylon blades when the steel
shield is installed and the shoulder harness is used. If steel/metal blades are used, the "U-Handle Kit" must be installed.
Dedicated Blade Capable
Model SRM-3110 includes both the "Blade Conversion Kit", and "U-Handle Kit".
10
EMISSION CONTROL
The emission control system for this engine is EM (Engine Modification).
Emission Control Label located on Engine
(EXAMPLE ONLY, information on label varies by FAMILY).
19
18
17
20
25
24
23
21
IMPORTANT ENGINE INFORMATION
ENGINE FAMILY: SEH034U824RA
DISPLACEMENT: 30.5 CC
THIS ENGINE MEETS U.S. EPA PH1 EMISSION
REGULATIONS FOR SMALL NON ROAD ENGINES.
REFER TO OWNER'S MANUAL FOR MAINTENANCE
SPECIFICATIONS AND ADJUSTMENTS.
1
2
13
14
15
22
8
9
10
7
12
7
5
6
5
4
11
3
26
3
16
GRASS TRIMMER/BRUSH CUTTER
OPERATOR'S MANUAL
1. OPERATOR'S MANUAL - Included in plastic bag (co-pack). Read before operation and keep in a safe place for future reference,
i.e., operation, maintenance, storage and specifications.
2. SAFETY MANUAL - Included in plastic bag (co-pack). Read before operation and keep in a safe place for future reference to
learn proper, safe operating techniques.
3. POWER HEAD - Includes the Engine, Clutch, Fuel System, Ignition System and Recoil Starter.
4. GRIP - Rear (right hand) handle.
5. STOP SWITCH "SLIDE SWITCH" mounted on top of the Throttle Trigger Housing. Move switch FORWARD to RUN, BACK to STOP.
6. FRONT HANDLE - The Front (loop) handle is not factory assembled to the Drive Shaft assembly (some models) and must be
positioned for proper cutting attitude and operator comfort.
7. DRIVE SHAFT ASSEMBLY - Includes the Rear (right hand) Handle assembly, Gear Housing assembly, Front (loop, left hand)
Handle assembly, Flexible Drive Cable (SRM-3100S, 3400 have solid steel drive shaft) and Safety Decal.
8. NYLON CUTTING ATTACHMENT - Contains replaceable nylon trimming line that advances when the trimmer head is tapped
against the ground while the head is turning at normal operating speed.
9. CUT-OFF KNIFE - Automatically trims line to the correct length: 5" after head is tapped on the ground. If trimmer is operated
without a cut-off knife the line will become too long, the engine will overheat and engine damage may occur.
10. PLASTIC DEBRIS SHIELD ASSEMBLY - Included in plastic bag (co-pack). MUST be installed on unit before use, see
Assembly Instructions. Shield assembly includes the Cut-Off Knife and Safety Decal. Mounts on the Gear Housing Assembly
just above the cutting attachment. Helps protect the operator by deflecting debris produced during the trimming operation. This
shield must be replaced with the steel shield for blade use.
11
11. THROTTLE TRIGGER - Spring loaded to return to idle when released. During acceleration, press trigger gradually for best
operating technique.
12. U-HANDLE - Required for metal blade operation.
13. BLADE - Circular blade for grass, weed or brush cutting applications. Harness, metal shield & U-handles required for blade
operation.
14. METAL BLADE SHIELD - Required when unit is equipped with blades. Do not operate unit without shield.
15. SHOULDER HARNESS - An adjustable strap that suspends the unit from the operator. Using the strap reduces operator fatigue.
16. HIP PAD - Used to protect hip/leg and clothing when using U-handle equipped unit.
17. CHOKE - The choke control is located on the top of the air filter case. Pull choke knob up to close the choke for cold starting.
Push knob down for the "RUN" position.
18. SPARK PLUG - Provides spark to ignite fuel mixture.
19. ARM REST - Provides arm rest during operation and protects arm from the hot engine.
20. MUFFLER/SPARK ARRESTER - The muffler controls the exhaust noise while the spark arrester prevents hot, glowing particles
of carbon from leaving the muffler where they could possibly start a fire.
21. FUEL TANK - Contains fuel and fuel filter.
22. RECOIL STARTER HANDLE - Pull handle slowly until starter engages, then quickly and firmly. When engine starts, return
handle slowly. DO NOT let handle snap back or damage to unit will occur.
23. FUEL TANK CAP - Covers and seals fuel tank opening.
24. PRIMER BULB - Pumping primer bulb before starting engine draws fresh fuel from the fuel tank priming the carburetor for
starting. Pump the bulb 10 times until fuel is visible in clear fuel return line.
25. AIR CLEANER - Contains replaceable filter element.
26. SAFETY VIDEO - (Not included with unit) P/N 99922202540 English version only is available at a cost of $5.00 from ECHO,
INC. or any authorized ECHO dealer. The video overviews safety precautions and proper operating techniques and is supplemen-
tal to the Safety Manual. Read and understand the Safety Manual for complete information on safe operation.
12
SPECIFICATIONS
MOD EL SR M-3100 2/2E SR M-3100S 1/1E SR M -3110 2/2E SR M-3400 1/1E
Length 1500 mm (59.0 in.) 1500 m m (59.0 in.) 1500 mm (59.1 in.) 1530 m m (60.2 in.)
Width 330 mm (13.0 in.) 330 mm (13.0 in.) 600 mm (23.6 in.) 330 m m (13.0 in.)
Height 260 m m (14.2 in.) 260 mm (14.2 in.) 420 mm (16.5 in.) 260 m m (10.2 in.)
W e i g ht (d ry) w /C utte r
Head
Engine Type
Bore 36.0 mm (1.42 in.) 36.0 mm (1.42 in.) 36.0 mm (1.42 in.) 38.0 mm (1.50 in.)
Stroke 30.0mm (1.18 in.) 30.0mm (1.18 in.) 30.0mm (1.18 in.) 30.0mm (1.18 in.)
Displacement 30.5 cc (1.89 cu. in.) 30.5 cc (1.89 cu. in.) 30.5 cc (1.89 cu. in.) 34.0 cc (2.08 cu. in.)
E xhaus t Spark Arrestor Muffler
Carburetor Walbro diaphragm model WT w/purge
Ignition System Flywheel magneto, capacitor discharge
Spark Plug NGK B PM -7A, (Gap 0.65 mm (0.026 in.)
Fuel Mixed (Gasoline and Two-stroke Oil)
Fuel/Oil Ratio 50:1 EC HO High Performance, two-stroke air cooled engine oil
Gasoline
Oil 50:1 EC HO High Performance, two-stroke air cooled engine oil
Fuel Tank Capacity
Starter System Automatic Recoil Starter
6.3 kg (13.9 lb.) 7.0 kg (15.4 lb.) 6.8 kg (14.9 lb.) 7.1 kg (15.7 lb.)
Air cooled, two-stroke, single cylinder gasoline engine
89 Octane unleaded. DO NOT use fuel containing methyl alcohol, more than
10% ethyl alcohol or 15% MTBE.
0.8 lit. (27.1 US fl. oz.)
Clutch Centrifugal Type
Drive Shaft 1/4" Flex Shaft
Rotating Direction Counter Clockwise viewed from top
C u tte r H e a d Nylon line head (2-line)
Handles* Front-Loop, Right Grip Standard on SRM-3100, 3100S, 3400
U-Handle Standard (SRM-3110)
Shoulder Harness Standard
Idle S peed 2400 - 3000 RPM
Wide Open Throttle
Speed (W.O.T.) with
Nylon Line Head
Wide Open Throttle
Speed (W.O.T.) with
Blade
7mm Spline
Steel S haft
9500 - 11000 RPM
8500 - 9500 RPM
1/4" Flex Shaft
* Install and use U-Handle when operating any model with blade.
8mm Spline
Steel S haft
Loading...